API 6A Christmas Tree for Wellhead

The Christmas tree is an assembly of valves spools and fittings for an oil well, and to design todirect and control formation fluids from the well. lt can provide inlet for production tubing strings,including all components above the tubing headadaptor.Christmas tree assemblies can constitutemany different kinds of combinations in order tomeet any special requirement.

Based on their different functions, Christmas trees can beclassified into such special Christmas trees as oil production (flowing and artificial lift) Christmas trees, gas (natural gas and various sour gas production Christmas trees, water injection Christmas trees, thermal recovery Christmas trees.fracturing Christmas trees and acidizing Christmas trees. Different pressure ratings serialize Christmas trees.

The gas production Christmas tree and tubing head are mainly used to produce gas and inject gas. The relative density of natural gas is low and gas column pressure is low, while well headpressure is high and liable to leakage regardless of gas production and gas injection. Sometimes natural gas contains corrosive media such as H2S and CO2. Therefore, the gas production Christmastree calls for rigid requirements on both itsmaterials and its sealing characteristics. For the ake of safety, two gate valves are used on the tubing and casing respectively. Some gate valves to be used on high pressure and ultra-high pressure gas wells are integrated valves manufactured from high quality forged steel.

The pressurization parts of the Christmas trees and tubing spools manufactured by Yanchgeng Ecko Petroleum Equipment Co.,Ltd.  are made of forged or special smelted forging, so it is high-pressurization safety and so on.